An anonymous reader writes: Ever since Microsoft turned its back on Windows gaming in favour of the closed Xbox Ecosystem, the platform has been crying out for a champion. The company occasionally gives nods towards a revived focus upon PC gaming, most recently with yet another relaunch for Games for Windows Live and a trio of upcoming PC games, but when it comes to throwing cash around the Xbox is the beneficiary. What can definitely be said is that the one group that should be championing the PC, the PC Gaming Alliance, is going backwards. In 2009 the group lost the biggest PC game developer/publisher Activision-Blizzard, and now it seems that both Microsoft and Nvidia have bid the alliance farewell. This sounds pretty unimpressive considering the operating system developer, both major graphics manufacturers and the publisher of the biggest PC game have departed the alliance.